why the nails are grow only at the tip of the hand and digits?

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why the nails are grow only at the tip of the hand and digits?

2007-03-08 01:44:24 · 2 answers · asked by karthi k 1 in Science & Mathematics ➔ Biology

2 answers

"keratinization"

look at the nail portion of this webpage

2007-03-08 04:04:06 · answer #1 · answered by ANT-a-gonistic 3 · 0⤊ 0⤋

They are leftovers from our ancestors who devloped claws to dig holes or to catch prey. If it wasn't for evolution, we wouldn't need to have been "provided" with nails.

Also, nails are hair in a different form.

2007-03-08 02:23:21 · answer #2 · answered by Joan H 6 · 0⤊ 0⤋